[This review was collected as part of a promotion.] I know it's a great product and the price was good.

Have used this oil for 20 years to maintain three successive Sierra 3500 Duramaxes. I noted an improvement in mileage when I first switched over and have never experienced a single wear related engine issue even beyond 200,000 miles.

I am using this in my new John Deere tractor. It flows well in winter making cold starts easy. It’s is resistant to thermal breakdown as I have had this oil in my tractor long enough to see oil consumption is virtually non existent. You spend. Lot of money for a diesel so you want to make darn sure it hold up to hard use can throw at it; even with that, the oil has not changed color. Durability and longevity is what I want in my investment and Rotella will take me there!

use it in my dodge with the cummins. turns over a lot faster in the winter than the 15w40 rotella.

Cold starts are smoother, better mileage

What more needs to be said. Been using it in my motorcycles and trucks for years.

I can get 10,000 miles between oil and filter changes.

Great value and quick shipping. Could not ask any more

I run Rotella in my 2003 doge Cummins and it’s the best I’ve tried. Walmart price is unbeatable,

Product is always available and price is always good.